Excitation by sound of Tollmien-Schlichting waves in a supersonic boundary layer (Q761318)
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scientific article; zbMATH DE number 3885545
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Excitation by sound of Tollmien-Schlichting waves in a supersonic boundary layer |
scientific article; zbMATH DE number 3885545 |
Statements
Excitation by sound of Tollmien-Schlichting waves in a supersonic boundary layer (English)
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1983
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The interaction of sound with a supersonic boundary layer is considered. Because of the dependence of the main flow on the longitudinal coordinate, a sound wave generates unstable oscillations within the boundary layer. Calculations made for Mach number \(M=2.0\) and dimensionless frequency \(2\pi f\nu_ e/U^ 2_ e=0.91\cdot 10^{-4}\) showed that near the lower branch of the curve of neutral stability a Tollmien-Schlichting wave can be excited with an intensity 2-3 times greater than that of the external acoustic wave.
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supersonic boundary layer
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sound wave generates unstable oscillations within the boundary layer
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curve of neutral stability
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Tollmien- Schlichting wave
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0.8508120775222778
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0.8446210026741028
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0.8251555562019348
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